During my Alpha (foundation) year in Multimedia University (MMU), my lecturer, Dr. Neo Tse Kian, taught us about the definition of multimedia. I remember when he said that seems we're from Multimedia University, which is situated in Jalan Multimedia, and being a Creative Multimedia student, we should be able to answer the meaning of multimedia.
Basicly, multimedia is a combination of 5 type of medias; which are text, image, audio, video, and animation; and may include with interactive features. These medias used as a communication tool to give information, digitally. That's why it is called multi + media.
As a multimedia designer, knowing how to produce graphics alone is not enough. We must know how to work with audio, video, animation, and interactivity parts. School students nowadays can produce their own multimedia product. For example, we can see some video uploaded on YouTube, where these young students shoot a video, add their own narration with text subtitles, few graphics and animations; to create their own story. Previously in my school, there was a room beside a library called "Bilik Audio & Visual". Now I think they should convert the name to "Bilik Multimedia" :p
With multimedia elements, life is more exciting and colorful.
And all these, of course, using some kind of technology.
image credit : DoDynamic | PaleoFuture